It's honestly quite difficult to give an accurate recommendation without know all the variables. That said, if a HPF/LPF is cutting out signal that the sound guy is using there is probably settings somewhere in the signal chain that need to be adjusted. Either the filters are set incorrectly, or the EQ on the mixer is set too extremely.
This is my opinion and not back by stats, but keep in mind that micing cabs has been turned in to going direct not because it is better but because it is easier. A mic'd cab is very different than direct, but a HPF/LPF and good eq can get you close. Or just use a cab sim.
Most analog mixers have the HPF set too high AND do not have enough control in the EQ section to actually be useful for bass guitar. Digital mixers have helped in this regard.